转盘:食物的可用性塑造了红风中异步化兄弟姐妹之间的动态攻击行为Milvus milvus
Benedetta Catitti1,2, Urs G Kormann1, Valentijn S van Bergen1
1Swiss Ornithological Institute, Seerose 1, 6204 Sempach, Switzerland.
Royal Society open science
|July 21, 2023
概括
红风的兄弟攻击随着食物的可用性而变化. 年轻的鸟类在食物稀缺时攻击更接近的同龄人,但在食物丰富时,所有鸟巢伴侣都会攻击,这有助于追赶成长.
科学领域:
- 行为生态学 行为生态学
- 动物行为 动物行为
- 进化生物学 进化生物学
背景情况:
- 侵略性对于动物社会中的统治至关重要,成本影响互动决策.
- 兄弟姐妹的侵略涉及包括的健康考虑,但其环境因素的调节还没有完全理解.
研究的目的:
- 研究食物供应波动如何影响红风 (Milvus milvus) 幼的侵略网络和食物分配.
- 了解在不同的资源条件下,动态侵略模式在青少年发育中的适应意义.
主要方法:
- 采用基于零模型的方法来分析侵略模式和食物分配.
- 研究了红风的幼,其中年龄主要决定了主导地位.
- 监测食品供应的日常变化及其对兄弟姐妹互动的影响.
主要成果:
- 较年长的红风幼根据食物的可用性转变了侵略策略:当食物不足时准年龄相近的竞争对手,而当食物充足时准所有友.
- 食物分配通常有利于年长的幼,但随着更好的供应和更广泛的侵略模式,最小的兄弟姐妹获得食物的机会增加了.
- 观察到动态的侵略模式会影响食物获取,并可能使年轻的幼能够赶上年龄的增长.
结论:
- 青少年红的动态攻击模式可以调节环境对发育的影响.
- 这些不断变化的侵略策略会影响主导地位的获得,并可能对新生的状态和整体健康状况产生重大影响.
- 这些发现突出了兄弟姐妹相互作用的适应性灵活性,以应对生态条件.
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